Hi, Tejun
On Sat, Aug 23, 2025 at 1:56 AM Tejun Heo <tj@xxxxxxxxxx> wrote:
>
> Hello,
>
> On Fri, Aug 22, 2025 at 04:22:09PM +0800, Julian Sun wrote:
> > +struct wb_wait_queue_head {
> > + wait_queue_head_t waitq;
> > + wb_wait_wakeup_func_t wb_wakeup_func;
> > +};
>
> wait_queue_head_t itself already allows overriding the wakeup function.
> Please look for init_wait_func() usages in the tree. Hopefully, that should
> contain the changes within memcg.
Sorry for having misunderstood what you meant before. I’m afraid that
init_wait_func() cannot work the same way. Because calling
init_wait_func() presupposes that we are preparing to wait for an
event(like wb_wait_completion()), but waiting for such an event might
lead to a hung task.
Please correct me if I'm wrong.
>
> Thanks.
>
> --
> tejun
Thanks,
--
Julian Sun <sunjunchao@xxxxxxxxxxxxx>
